import hashlib
import requests
from cryptography.fernet import Fernet
from typing import Dict, Optional

class DeploymentEngine:
    def __init__(self, config: Dict):
        self.config = config
        self.cipher = Fernet(config["encryption_key"])
        
        # 验证系统依赖
        self._check_dependencies()

    def _check_dependencies(self) -> None:
        """验证系统必备组件"""
        required = {"python": (3, 8), "openssl": "1.1.1"}
        if not self._meet_requirement(required):
            raise EnvironmentError("系统环境不满足最低要求")

    def deploy(self, target: str) -> str:
        """执行部署操作"""
        try:
            # 加密传输配置
            encrypted = self._encrypt_data(self.config)
            
            # 发送部署请求
            response = requests.post(
                self.config["server_url"],
                data=encrypted,
                timeout=30
            )
            response.raise_for_status()
            
            return self._decrypt_response(response.text)
            
        except requests.RequestException as e:
            raise RuntimeError(f"部署失败: {str(e)}")

    def _encrypt_data(self, data: Dict) -> str:
        """使用Fernet加密数据"""
        return self.cipher.encrypt(json.dumps(data).encode()).decode()

    def _decrypt_response(self, ciphertext: str) -> Dict:
        """解密服务器响应"""
        return json.loads(self.cipher.decrypt(ciphertext.encode()).decode())

    @staticmethod
    def _meet_requirement(requirements: Dict) -> bool:
        """检查系统要求"""
        # 实现实际的版本检测逻辑
        return True  # 示例代码